Review the multiple-concept example as an aid in solving this problem. In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves on a circle. In one instance, the radius of the circle is 0.685 m. At one point on this circle, the ball has an angular acceleration of 63.8 rad/s2 and an angular speed of 15.0 rad/s. (a) Find the magnitude of the total acceleration (centripetal plus tangential) of the ball.

Total acceleration will be

Explanation:

We have given radius of the circle r = 0.685 m

Angular acceleration

Angular speed

Centripetal acceleration will be

Tangential acceleration will be

(a) Total acceleration will be equal to

So total acceleration will be

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .